The invention discloses a hybrid power drive system for a diesel fork lift truck, and belongs to the technical field of hybrid power driving. The system comprises an internal combustion engine, a shock absorber, a coupler 1, an IMG motor, a coupler 2, a frequency converter, a storage battery, a walking hydraulic pump, a working hydraulic pump, a walking hydraulic motor, a hydraulic valve, an inclined hydraulic cylinder and a lifting hydraulic cylinder. The internal combustion engine and the IMG motor are connected in parallel, the IMG motor can work in an electric state and a power generationstate, and the driving and braking energy recovery functions are achieved; the walking hydraulic pump is a variable axial plunger pump, and the walking hydraulic pump and a quantitative radial plungerhydraulic motor form a closed-loop hydraulic system to drive a forklift to run. During braking, the walking hydraulic pump works in a motor mode, kinetic energy of the forklift is used for driving the IMG motor to work, and the kinetic energy is stored in the storage battery in an electric energy mode. The working hydraulic pump is an open-loop hydraulic pump, the variable axial plunger pump is adopted and is responsible for supplying oil to the inclined hydraulic cylinder and the lifting hydraulic cylinder, and adjustment of the oil quantity is completed through the hydraulic valve. By adding the hybrid drive motor into a traditional internal combustion drive system, effective recovery of forklift brake energy is achieved, energy consumption is reduced, emission and noise pollution are reduced, and the energy-saving and environment-friendly effects are achieved.

    本发明公开了一种用于内燃叉车的混合动力驱动系统,属于混合动力驱动技术领域,包括内燃发动机、减震器、耦合器1、IMG电机、耦合器2、变频器、蓄电池、行走液压泵、工作液压泵、行走液压马达、液压阀、倾斜液压缸和举升液压缸。本发明的内燃发动机和IMG电机并联连接,IMG电机可以工作在电动和发电两个状态,实现驱动和制动能量回收功能;行走液压泵为变量轴向柱塞泵,与定量径向柱塞液压马达组成闭环液压系统,驱动叉车行驶;在制动时行走液压泵以马达模式工作,利用叉车动能驱动IMG电机工作,将动能以电能的形式储存在蓄电池中;工作液压泵为开环液压泵,采用变量轴向柱塞泵,负责给倾斜液压缸和举升液压缸供油,油量的调节通过液压阀完成。本发明通过在传统内燃驱动系统中加入混合驱动电机实现叉车制动能量的有效回收,有助于减少能量消耗,降低排放和噪音污染,具有节能环保的作用。


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    Title :

    Hybrid power drive system for diesel fork lift truck


    Additional title:

    一种用于内燃叉车的混合动力驱动系统


    Contributors:

    Publication date :

    2020-09-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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